Stars

Scenario of a FELT event (Image NASA, ESA, and A. Feild (STScI) )

An article published in the journal “Nature Astronomy” describes a research that offers an explanation to a type of extremely bright event called Fast-Evolving Luminous Transient (FELT), that lasts just a few days. A team of researchers took advantage of the ability of NASA’s Kepler space telescope to accurately detect rapid changes in starlight to build a model in which a FELT event is caused by a large shell of gas and dust around a supernova, which makes it shine.

Artist's concept of the panorama on the planet TRAPPIST-1f (Image NASA/JPL-Caltech/T. Pyle (IPAC))

An article published in the journal “Nature Astronomy” describes a research into the possible migration of the orbits of the 7 planets of the ultra-cool dwarf star TRAPPIST-1’s system and their composition. A team of researchers from Arizona State University (ASU) and Vanderbilt University put together the information available on that system to perform a series of calculations concluding that the planets formed much farther away from their star from their current positions and that some of them have a very high water content, paradoxically too much for them to be habitable.

Map of high-energy Gamma Rays (Image NASA/DOE/Fermi LAT Collaboration)

An article published in the journal “Nature Astronomy” describes a research that indicates the origin in an anomalous gamma-ray source detected for the first time in 2009 by the NASA’s Fermi gamma-ray space telescope. One of the hypotheses concerned collisions of dark matter particles, instead according to a team of astronomers there are millisecond pulsars in the nucleus of the Milky Way whose emissions mixed up in the signal detected by Fermi.

Illustration of exoplanets orbiting red dwarfs

An article published in “The Astronomical Journal” shows the confirmation of 15 exoplanets that orbit red dwarfs. A team of researchers led by Teruyuki Hirano from the Tokyo Institute of Technology used data collected by NASA’s Kepler space telescope and follow-up observations. Another article in the same journal focuses on 3 confirmed super-Earths including K2-155d, which could be in ​​its system’s habitable zone.

The Orion Nebula

An article published in the journal “Astronomy & Astrophysics” describes a new study of the Orion Nebula. A combination of observations made with the ALMA radio telescope, the 30-meter IRAM telescope and the HAWK-I instrument installed on ESO’s VLT allowed the creation of a unique image of the Orion Nebula. It’s an area of ​​space in which there are various molecular clouds where gas concentrations give life to new stars in processes that can be best studied by putting together the data collected at different electromagnetic frequencies.